Female Werewolf (2015)

Carrie Gemmell, an office woman that initially appears to lead a dull life working at an uninspiring office job. At night, however, she has several surreal fantasies involving sex, blood, and a young woman (Cheryl Singleton) she works with at the office. "She" will occasionally wake up in strange places and is convinced that she's turning into a werewolf - something that she believes is evidenced by her teeth elongating.